Các lớp khác của máy có thể trả tiền để sửa chữa những người có sự kết thúc cao của thị trường, máy tính xách tay có thể chỉ qua một bảo hành một năm và mà chi phí thay thế có thể được nhiều hơn $ hoặc thậm chí đóng cửa để $. | 94 Part II Explaining What Could Possibly Go Wrong Installing New Memory Safety First Memory is subject to damage from electrostatic sparks and from power surges. Once in place within your machine it s mostly protected by the circuitry of the AC adapter charger and the battery the moments of highest risk come in the installation of memory. Here is the best procedure to follow when installing new memory in a machine 1. Place the laptop on a sturdy work surface that has good lighting. 2. Completely discharge the power in the laptop before opening it. Start by unplugging the power cord from the wall. Then remove the battery pack. 3. Make sure you have the proper tools to open the memory compartment. On most machines you need a small Phillips-head screwdriver. A handful of manufacturers are less friendly to do-it-yourselfers and close the compartment with Torx or other fasteners that require use of special tools you may have to visit a hardware store or computer retailer to obtain proper tools in that situation. In Figure 6-3 I m opening the panel on the bottom of a modern laptop. Figure 6-3 Opening the door to the RAM compartment on the bottom of a laptop. Chapter 6 Brain Matters Memory Microprocessors and BIOS 95 4. Ground yourself before touching any internal part of the computer. Sit still in a chair and touch a metal pipe or the center screw of an electrical outlet to remove any charge you may have built up walking across the room. 5. Install new memory modules or remove and reinstall problematic ones. The modules are designed to fit in place in only the proper orientation and once connected are held in place by small clips. In Figure 6-4 I m preparing to lower a SODIMM into place as the second bank of memory. 6. Put the battery pack back in place and attach the AC cord. Figure 6-4 Placing a 128MB SODIMM into the available slot on an older laptop. When memories go bad As I ve already noted memory modules don t often fail all by themselves. That doesn t mean never
